JPS5593384A - Color television receiver of beam index type - Google Patents

Color television receiver of beam index type

Info

Publication number
JPS5593384A
JPS5593384A JP210479A JP210479A JPS5593384A JP S5593384 A JPS5593384 A JP S5593384A JP 210479 A JP210479 A JP 210479A JP 210479 A JP210479 A JP 210479A JP S5593384 A JPS5593384 A JP S5593384A
Authority
JP
Japan
Prior art keywords
output
television receiver
fed
color television
beam index
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP210479A
Other languages
Japanese (ja)
Inventor
Kunio Ando
Masao Kako
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP210479A priority Critical patent/JPS5593384A/en
Publication of JPS5593384A publication Critical patent/JPS5593384A/en
Pending legal-status Critical Current

Links

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE: To prevent the lowering in the contrast of picture, by obtaining the index signal representing the beam position on the fluorescent screen without flowing the beam current of slight amount at all times as the bias current.
CONSTITUTION: An arbitrary horizontal scanning period in one vertical scanning period is selected and a given voltage W(t) is fed to the cathode 6. Thus, a given beam current flows to the cathode ray tube 100, secondary electron flow is detected, and an output is caused from the pulse forming circuit 14. This output and the output of the monostable multivibrator 23 activated by this output are synthesized at the OR circuit, and after the pulse width is extended, it is fed to the delay element 25. Further, the output of the delay element is used as the index signal at the next one horizontal scanning.
COPYRIGHT: (C)1980,JPO&Japio
JP210479A 1979-01-10 1979-01-10 Color television receiver of beam index type Pending JPS5593384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP210479A JPS5593384A (en) 1979-01-10 1979-01-10 Color television receiver of beam index type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP210479A JPS5593384A (en) 1979-01-10 1979-01-10 Color television receiver of beam index type

Publications (1)

Publication Number Publication Date
JPS5593384A true JPS5593384A (en) 1980-07-15

Family

ID=11520029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP210479A Pending JPS5593384A (en) 1979-01-10 1979-01-10 Color television receiver of beam index type

Country Status (1)

Country Link
JP (1) JPS5593384A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116892A (en) * 1981-12-29 1983-07-12 Sanyo Electric Co Ltd Beam index type color television receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116892A (en) * 1981-12-29 1983-07-12 Sanyo Electric Co Ltd Beam index type color television receiver
JPH0418510B2 (en) * 1981-12-29 1992-03-27 Sanyo Electric Co

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